Unauthorized Access to Japan's Government Solution Service (GSS) Exposes 246,000 Personal Records via VPN Flaw
Japan's Digital Agency confirmed that its Government Solution Service (GSS) suffered unauthorized access after attackers exploited a vulnerability in VPN equipment used for external maintenance operations. The intrusion, believed to have begun in late May 2026, allowed threat actors to compromise maintenance accounts and access large volumes of files on internal servers. On June 25, 2026, security teams detected suspicious access to numerous files using a compromised account, prompting an investigation that concluded on July 9 with confirmation of the breach. Some files containing personal information may have been exfiltrated, affecting approximately 246,000 records of government officials, civil servants, contractors, and related individuals. The agency immediately disabled the affected accounts and severed external communications on July 9 but has not disclosed technical details of the exploited VPN vulnerability. The incident was reported by Security NEXT on September 11, 2026.
Security NEXTSep 11, 2026Translated from Japanese